An EMP knocks out all the power in North America. As people are scrambling to get generators (or anything else) running, they begin to hear rumors. Nuclear war. Chaos. What about the President? Is she alive or did she die in the disaster?Mary Orsen discovers that her ability to travel through time was not affected by the EMP. She has the power and the ability to go back in time and prevent the war. But she also knows that she'll only make things worse if she doesn't go back and change what really started it. Was it the EMP, or had it actually begun before that?Mary consults with men who have traveled through time before: Bat Garrett and Garison Fitch. They are old now and can, however, only give advice. If the world is going to be saved, there can only be one TimeKeeper.And Mary's pretty sure she's not it.